Characterizing and monitoring respiratory aerosols by light scattering

被引：66

作者：

Pan, YL ^{[1
]}

Aptowicz, KB

Chang, RK

Hart, M

Eversole, JD

机构：

[1] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA

[2] Yale Univ, Ctr Laser Diagnost, New Haven, CT 06520 USA

[3] USN, Res Lab, Washington, DC 20375 USA

来源：

OPTICS LETTERS | 2003年 / 28卷 / 08期

关键词：

D O I：

10.1364/OL.28.000589

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The elastic-scattering intensity pattern from a single particle as a function of spherical coordinate angles theta and phi provides detailed information on the pattern's morphology. By use of an ellipsoidal reflector and a CCD camera, a single-laser-shot intensity pattern from a large angular range (theta from 90degrees to 168degrees and phi from 0degrees to 360degrees) was detected from a single aerosol (e.g., a Bacillus subtilis spore, a 1-mum-diameter polystyrene latex sphere, or a cluster of either of these) flowing through the reflector's focal volume at 5 m/s. Noticeable differences in the large-angle-range two-dimensional angular optical scattering (LATAOS) suggest that the LATAOS pattern could be useful in differentiating and classifying life-threatening aerosols from normal background aerosols. (C) 2003 Optical Society of America.

引用

页码：589 / 591

页数：3

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